Brocade Communications Systems AA979A - StorageWorks SAN Switch 2/8V Reference Manual page 73

Table 1-4
System
Module
RCS
RPCD
RTWR
SCN
SEC
SNMP
SS
SULB
SWCH
SYSC
SYSM
TRCE
Fabric OS Message Reference
Publication Number: 53-1000242-01
System Module Descriptions (Continued)
Description
The reliable commit service daemon generates log entries when it receives a request from
the zoning, security, or management server for passing data messages to switches in the
fabric. RCS then requests RTWR (reliable transport write and read) to deliver the message.
RCS also acts as a gatekeeper, limiting the number of outstanding requests for the Zoning,
Security, or Management Server modules.
The remote procedure call daemon (RPCD) is used by Fabric Access for API-related
tasks.
The reliable transport write and read daemon helps deliver data messages either to specific
switches in the fabric or to all of the switches in the fabric. For example, if some of the
switches are not reachable or are offline, RTWR returns an "unreachable" message to the
caller, allowing the caller to take the appropriate action. If a switch is not responding,
RTWR retries 100 times.
The internal state change notification daemon is used for state change notifications from
the kernel to the daemons within Fabric OS.
The security daemon generates security errors, warnings, or information during security-
related data management or fabric merge operations. Administrators should watch for
these messages, to distinguish between internal switch and fabric operation errors, and
external attack.
Simple Network Management Protocol is a universally supported low-level protocol that
allows simple get, get next, and set requests to go to the switch (acting as an SNMP agent).
It also allows the switch to send traps to the defined and configured management station.
Brocade switches support six management entities that can be configured to receive these
traps.
The supportSave command generates these error messages if problems are encountered.
The software upgrade library provides firmwareDownload command capability, which
enables firmware upgrades to both CP blades with a single command, as well as
nondisruptive code load to all 4.x switches. These messages might display if there are any
problems during the firmwareDownload procedure. Most messages are informational
only and are generated even during successful firmware download. For additional
information, refer to the Fabric OS Administrator's Guide.
These messages are generated by the switch driver module that manages a Fibre Channel
switch instance.
System controller is a daemon that starts up and shuts down all Fabric OS modules in the
proper sequence.
General system messages.
RAS TRACE error messages.
System Module Descriptions
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